Issues in therapeutic apheresis.
D001172:Arthritis, Rheumatoid / Q000628:therapy; D002469:Cell Separation / Q000295:instrumentation; D002986:Clinical Trials as Topic; D003362:Cost-Benefit Analysis; D006801:Humans; D010951:Plasma Exchange / Q000191:economics; D010956:Plasmapheresis / Q000191:economics; D011446:Prospective Studies; D011897:Random Allocation; D012306:Risk